Envelop.



H. H. JENSEN.

ENVELOP.

APPLICATION FILED FEB. 23, 1912. 1 ,0465467. Patented Dec. 10, 1912.

F w fl u l a a i L ---J W/T/VE SE8: INVENTOR Q fi ff) H JENJEN M A TTORNE Y COLUMBlA PLANOGRAPH 60., WASHINGTDN, D. c.

HARRY H. JENSEN, OF OAKLAND, CALIFORNIA.

ENVELOP.

Specification of Letters Patent. Patented Dec. 10, 1912.

Application filed February 23, 1912. Serial No. 679,322.

To all whom 'it may concern:

Be it known that I, HARRY H. JENSEN, citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Envelops, of which the following is a specification.

This invention relates to fire proof containers or envelops and has for its object the construction of an envelop, or package which will preserve the contents from destruction by heat whereby the contents will still be preserved intact without serious 1njury thereto.

Another object of this invention is a production of a simple and e-flicient envelop structure which, although the outer surface may be entirely mutilated, the inner protector surface will still be preserved and the marks of identification will still appear upon the protector surface.

With these and other objects in view this invention consists of certain novel constructions, combinations, and arrangements of parts as will be hereinafter fully described and claimed.

In the drawings: Figure 1 is a front view of an envelop constructed in accordance with this invention. Fig. 2 is an inside View of the blank from which the envelop is made before the same is folded. Fig. 3 is a view in section of the material used in constructing the envelop.

Referring to the accompanying drawings it will be seen that the envelop comprises a body portion 1 having the usual end and side flaps 2.- The envelop body is principally composed of a layer of paper 3, a layer of carbon 4: and a sheet, or layer of asbestos, or other fire proof material 5. These layers of material are firmly cemented or otherwise secured together and the asbestos protector sheet 5 is placed upon the inside of the receptacle or envelop which is being formed thereby presenting a finished outer face for constituting the neat appearance of the envelop, or other receptacle. Of course, it should be understood that it is not my intention to limit myself to merely the construction of an envelop out of the material as set forth, for the same material as described and hereinafter claimed may be used in constructing any desired package without departing from the spirit of the invention. Of course, it is unnecessary to use the carbon sheet at other than on the face of the envelop where the name, or identification, to wit :the address should occur.

When the sections of the envelop are assembled as above described the address of the person receiving the letter, or marks of identification may be placed upon the face of the envelop, and through the medium of the transfer carbon 4 this address will be permanently transferred upon the protector sheet 5 and should the sheets 8 and 4 become warm, or charred by burning, the envelop, or package will still retain its formation and the address, or marks of identification will be plainly visible upon the protector sheet 5.

Of course the fire proof layers may be insuficient to protect the contents from intense heat but even under such conditions the contents will be held intact and sufliciently assembled to render it decipherable. It should be further observed that the asbestos protector sheet 5 owing to its stiffness will greatly protect the contents of the receptacle, which is made of the material as above set forth.

What is claimed is:

1. A receptacle formed from sheet material comprising a fire proof layer, a finishing layer and a carbon sheet interposed between said layers for constituting a transfer means whereby marks of identification may e transferred upon the fire proof layer providing the outer layer and transfer layer should become destroyed.

2. A receptacle of the class described formed from sheet material comprising a layer of asbestos, a layer of finishing paper placed upon the outer face thereof and a carbon sheet interposed between said layers for facilitating the transfer of marks of identification upon said asbestos sheet.

3. An envelop of the class described comprisinga body, end flaps carried thereby, said body comprising a sheet of asbestos,

said end flaps comprising a sheet of asbesbecome destroyed and removed from said tos, an outer sheet covering said body and protector sheet. end flaps, a transfer sheet carried by said In testimony body between said asbestos sheet and an in presence of outer sheet for transferring marks of identification from said outer sheet upon said protector sheet whereby the same may be identified providing'the outer sheet should whereof I afliX my'signature tWo Witnesses.

HARRY H. JENSEN. Witnesses:

W. A. STOCK,

F. P. SCHROEDER.

Copies of this patent ma be obtained for five cents each, by addressing the Washington. I). G.

Commissioner of Patents 

